class MySingleList {
    static class ListNode {
        public int val=100;
        public ListNode next;
        public ListNode(int val) {
            this.val = val;
        }
    }

    public ListNode head;
    public void display() {
        ListNode cur = head;
        while (cur != null) {
            System.out.print(cur.val + " ");
            cur = cur.next;
        }
}

public class Test {
    public static void main(String[] args) {
        MySingleList.ListNode li =new MySingleList.ListNode();
        
    }

}














